“… in normal circumstances an arrest without warrant either by a policeman or by a private person can be justified only if it is an arrest on a charge made known to the person arrested.”
“Arrested with or without a warrant the subject is entitled to know why he is deprived of his freedom, if only in order that he may, without a moment’s delay, take such steps as will enable him to regain it.”
“… a man is entitled to his liberty, and may, if necessary, defend his own freedom by force. If another person has a lawful reason for seeking to deprive him of that liberty, that person must as a general rule tell him what the reason is, for, unless he is told, he cannot be expected to submit to arrest, or blamed for resistance.”
“it may not be the role of police officers, who are charged with the sometimes delicate task of arresting a patient, to inform him of the detailed reasons of arrest or recall, as they are not qualified to assess the patient’s condition and his ability to understand the position. However, the responsibility of informing the patient or his representatives will, in such circumstances, fall on the medical officers concerned.”
“Nevertheless this obligation has to be discharged promptly, ie at the latest on arrival at the hospital.”
“66. … anyone entitled … to take proceedings to have the lawfulness of his detention speedily decided cannot make effective use of that right unless he is promptly and adequately informed of the facts and legal authority relied on to deprive him of his liberty.”
“Where a conditionally discharged patient is to be recalled to hospital, a brief verbal explanation of the Secretary of State’s reasons for recall must be provided to the patient at the time of recall unless there are exceptional reasons why this is not possible, eg the patient is violent or too distressed.”
“68. … It is not every breach of public law that is sufficient to give rise to a cause of action in false imprisonment. In the present context, the breach of public law must bear on and be relevant to the decision to detain.”
“207. … the breach of public law duty must be material to the decision to detain and not to some other aspect of the detention and it must be capable of affecting the result - which is not the same as saying that the result would have been different had there been no breach.”
“66. … a delay [in the conduct of the requisite review] of three months or more is likely to merit an award, whereas the stress and anxiety which can be inferred from a delay of shorter duration are unlikely to be of sufficient severity.”